Difference between revisions of "Toxascaris leonina"

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{{OpenPagesTop}}
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{{Taxobox
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|name              = Toxascaris leonina
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|kingdom            =
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|phylum            =
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|class              = [[Nematodes|Nematoda]]
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|sub-class          =
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|order              =
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|super-family      = [[Ascaridoidea]]
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|family            =
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|sub-family        =
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|genus              =
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|species            =
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}}
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Also known as: '''''Toxascaris limbata
  
{| cellpadding="10" cellspacing="0" border="1"
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==Hosts==
| Also known as:
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Dogs, cats, and foxes.
| '''Toxascaris limbata
 
|-
 
|}
 
  
===Scientific Classification===
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==Identification==
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''T. leonina'' is of the superfamily [[Ascaridoidea]]. It is similar in appearance to ''[[Toxocara canis]]'', but slightly smaller at around 10cm in length. There are three large lips surrounding the mouth, and there is no buccal capsule.
  
{| cellpadding="10" cellspacing="0" border="1" 
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The eggs are ovoid, around 75μm in length, with a thick outer shell.
| Class
 
| Nematoda
 
|-
 
| Superfamily
 
| Ascaridoidea
 
|}
 
  
The biology of ''T. leonina'' is generally similar to that of ''T. canis'', '''except''':
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==Life Cycle==
*it infects both felidae and canidae
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The infective stage of ''T. leonina'' is L2, which are found in the egg. The eggs are ingested by the host, hatch, and enter the alimentary tract. The larvae then penetrate the wall of the intestine. The larvae continue to develop and mature into adults. The adults live in the lumen of the intestine. In the host there is:
*in the final host:
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*'''no prenatal transmission'''
**there is '''no prenatal transmission'''
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*'''no transmammary transmission'''
**there is '''no transmammary transmission'''
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*'''no hepato-tracheal migration'''.
**there is '''no hepato-tracheal migration'''
 
*in 'paratenic' hosts:
 
**develops to L3 in tissues (the 'paratenic' hosts therefore are really facultative intermediate hosts).
 
  
Transmission is via ingestion of the embryonated egg or an infected 'paratenic' host. The zoonotic potential is uncertain, but ''T. leonina'' is not thought to be as hazardous as ''T. canis''.
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The prepatent period is 10-11 weeks.
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{{Learning
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|literature search = [http://www.cabdirect.org/search.html?q=title:(%22Toxascaris+leonina%22)+OR+title:(%22Toxascaris+limbata%22) ''Toxascaris leonina'' publications]
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|Vetstream = [https://www.vetstream.com/canis/search?s=nematode Nematodes]
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}}
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{{review}}
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{{OpenPages}}
  
 
[[Category:Ascaridoidea]][[Category:Dog_Nematodes]]
 
[[Category:Ascaridoidea]][[Category:Dog_Nematodes]]
 
[[Category:Cat_Nematodes]]
 
[[Category:Cat_Nematodes]]
[[Category:To_Do_-_Max]]
 

Latest revision as of 17:45, 4 June 2016


Toxascaris leonina
Class Nematoda
Super-family Ascaridoidea

Also known as: Toxascaris limbata

Hosts

Dogs, cats, and foxes.

Identification

T. leonina is of the superfamily Ascaridoidea. It is similar in appearance to Toxocara canis, but slightly smaller at around 10cm in length. There are three large lips surrounding the mouth, and there is no buccal capsule.

The eggs are ovoid, around 75μm in length, with a thick outer shell.

Life Cycle

The infective stage of T. leonina is L2, which are found in the egg. The eggs are ingested by the host, hatch, and enter the alimentary tract. The larvae then penetrate the wall of the intestine. The larvae continue to develop and mature into adults. The adults live in the lumen of the intestine. In the host there is:

  • no prenatal transmission
  • no transmammary transmission
  • no hepato-tracheal migration.

The prepatent period is 10-11 weeks.


Toxascaris leonina Learning Resources
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Vetstream
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Literature Search
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Toxascaris leonina publications





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